In memoriam Dr. H.A. Enno van Gelder 1889-1973. BMGN-LCHR [Internet]. 1973 Jan. 1 [cited 2024 Nov. 16];88(3):470-1. Available from: https://ojstest.minions.amsterdam/article/view/URN%3ANBN%3ANL%3AUI%3A10-1-107753